i got education benefits. i work at walmart. i'm a pharmacist. sales associate. i manage produce. i work in logistics. there's more to walmart than you think. vo: opportunity. that's the real walmart. >>> if you've been suffering from back or shoulder problems lately, could be your cell phone or tablet's fault. >> you're probably not thinking about this, but there's a growing condition out there called i-posture and this is neither sexy nor cool. lesli foster found out doctors are reporting more and more people under age 30 are showing up on their doorsteps with some unfamiliar aches and pains. >> cell phones, tablets, laptops, everything you go people are glued to their devices. mobile electronic use has grown significantly over the past decade and so has the number of people suffering from back pain. >> people don't follow correct body mechanics and we see this often when people use the tablets and iphones. >> take a look. people are hunched over or have slouched posture while they use their tablets and mobile phones and this can lead to neck and upper back strain. >> we don't r